Today I’ll show you the most essential SQL functions, that you will use for finding the maximums or the minimums (MAX, MIN) in a data set and to calculate aggregates (SUM, AVG, COUNT). Then I’ll show you some intermediate SQL clauses (ORDER BY, GROUP BY, DISTINCT) as well, that you have to know to be able to use SQL for data analysis efficiently! And this is gonna be super exciting, as we will still use our 7M+ lines data set!
This is the second episode of my SQL for Data Analysis (for beginners) series and today I’ll show you every tiny little details of the SQL WHERE clause. It’s not by accident that I dedicate a whole article to this topic: SQL WHERE clause is essential, if you want to select the right bit of your data from your data table!
This post presents Darius Contractor's framework for how user psychology has driven growth at companies like Bebo, Tickle, PhotoSugar and of course, Dropbox. - What is "user psych" - Measuring motivation in units of Psych - The common practices that decrease Psych - How to increase Psych at every step - Examples: Match.com and Airbnb hosting flow
Conversion rate optimization, also called CRO, is a system for increasing the percentage of visitors to a website that convert into customers, or more generally, take any desired action on a webpage.
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